Minifigure-scale Flare-S swoops are not the easiest bikes to design, but I've made my attempt for the record. These little engines with seats have been around since Shadows Of the Empire, and have subsiquently appeared in both Essential Guides to Vehicles, Star Wars: Behind the Magic, Jedi Knight: Jedi Academy, and Droids: the Proticol Offensive. The last resource inspired me to place the generic Threepio minifigure on the hot rod racing vehicle. After that I decided to use the 2002 Aretech speederbike for scale comparison, handed the proticol droid a gun, and set the scene in the Corellian Crystal Swamps where Han raced Dengar as a lad.
The Flare-S is supposed to be 2.5 to 3 meters long, has a light blaster cannon, and seats one. Reference images compliments of Wookipedia.com.